LKB - Bose-Einstein condensates

  • 2D rubidium Bose gases
  • Research
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  • Team

2D rubidium Bose gases

Current team : Brice Bakkali, Jérôme Beugnon, Guillaume Chauveau, Jean Dalibard, Chloé Maury, Sylvain Nascimbène, Yiquan Zou

Contacts :
Jérôme Beugnon
Sylvain Nascimbene
Jean Dalibard

Collège de France. 11 Place Marcelin Berthelot. 75005 Paris

     In the rubidium team we explore the physics of two-dimensional Bose gases. Starting from a 3D Bose-Einstein condensate we load atoms in a light sheet that strongly confines the atoms along the vertical direction to reach the 2D regime. These last years, we realized in-plane box potentials with custom shapes that allow, for instance, to study the physics of uniform systems. We observed the emergence of coherence in these uniform systems after a quench cooling step. We detected the formation of topological defects (vortices or superfluid current in a ring) as predicted within the framework of the Kibble-Zurek mechanism. Recently, we also explored thermodynamics properties related to the propagation of sound or the measurement of Tan’s contact, scale-invariant dynamics and magnetic dipole-dipole interactions.